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# Use the following information to answer the next two exercises. X = the number of days per week that 100 clients use a particular exercise facility.$$\begin{array}{|l|l|}\hline x & {\text { Frequency }} \\ \hline 0 & {3} \\ \hline 1 & {12} \\ \hline 2 & {33} \\ \hline 3 & {28} \\ \hline 4 & {11} \\ \hline 5 & {9} \\ \hline 6 & {4} \\ \hline\end{array}$$The number that is 1.5 standard deviations BELOW the mean is approximately _____a. 0.7b. 4.8c. $-2.8$d. Cannot be determined

## a. 0.7

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### Video Transcript

for problem once anyone were given dates are representing X, which is the number of days per week that our 100 clients use a particular exercise facility. Now we are asked to find the number that is one point fast under deviations below the mean we re supposed to calculate are mean and asked on a deviation. The meaning is equal to 2.75 on the formula. For the mean, as you can see, is the sum of the exes divided by the number of observations we get. It mean off 2.75 in our standard, deviation is equal to the some off the deviations squared, divided by the number of observations the you just screamed roots with since our fraction and get standard deviation off Bomb 0.37 Are we supposed ticket the number that is 1.5 standard deviations below the mean That's open 75 which is my mean minus 1.5 times 1.37 which is my standard deviation gives us an answer off 0.7. So the correct answer is a which is your 0.7. Thank you

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